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  2. Greenhouse Gas Reporting Program (GHGRP)

Subpart SS – Manufacture of Electric Transmission and Distribution Equipment

This page provides resources for subpart SS reporters, including implementation information as well as supporting documents for relevant rulemakings.

On this page:
  • Summary
  • Reporter Resources
  • Regulatory History

Read the Current Rule

View Data Highlights


Summary

Electric equipment manufacturers and refurbishers include facilities that manufacture and/or refurbish sulfur hexafluoride (SF6)- or perfluorocarbons (PFCs)-insulated closed-pressure equipment and sealed-pressure equipment including gas-insulated substations, circuit breakers and other switchgear, gas-insulated lines, or power transformers containing SF6 or PFCs. 

Reporter Resources

  • Subpart SS Information Sheet
  • Subpart SS Monitoring Checklist
  • Subpart SS Factsheet
  • Training Presentations

Subpart SS Regulatory History

40 CFR part 98.450
Federal Register Date Citation Action Description First reporting year impacted
4/25/2024 89 FR 31802 Final Rule

Updates global warming potentials (GWPs), expands the GHGRP to new source categories, and revises the requirements for certain sectors to improve the data collected and program implementation.
Final Preamble and Rule (4/2024) (pdf) (3.4 MB)
Response to Comments 2024 (pdf) (5.05 MB)
Final Rule Fact Sheet (April 2024) (pdf) (343.73 KB)
Fact Sheet about Updated GWPs (pdf) (166.87 KB)
Supplemental Preamble and Rule (5/22/2023) (pdf) (1 MB)
Proposed Preamble and Rule (6/21/2022) (pdf) (2.2 MB)
Rulemaking Docket

2024 (updated GWPs for existing reporters)
2025 (all other changes)
12/11/2014 79 FR 73750 Final Rule Adds chemical-specific and default global warming potentials (GWPs) for fluorinated greenhouse gases (F-GHGs) and fluorinated heat transfer fluids (F-HTFs) to the general provisions of the Greenhouse Gas Reporting Rule, makes conforming changes to subpart I (Electronics Manufacturing) and subpart L (Fluorinated Gas Production), amends certain provisions of subpart L, and establishes confidentiality determinations for certain reporting requirements of subpart L.
Correction Notice (12/2014) (pdf) (1 p, 230K)
Final Preamble and Rule (11/2014) (pdf) (48 pp, 796K)
Response to Comments (12/2014)
Fact Sheet (12/2014) (pdf) (45 KB)
Proposed Preamble and Rule (1/10/2012) (pdf) (19 pp, 222K)
Proposed Preamble and Rule (9/11/2013) (pdf) (31 pp, 550K)
Proposed Rule (11/19/2013) (pdf) (24 pp, 400K)
Proposed Preamble and Rule (7/31/2014) (pdf) (21 pp, 370K)
Notice of Data Availability (pdf) (6 pp, 251K)
2014
11/29/2013 78 FR 71904 Final Rule Updates global warming potentials (GWPs) to reflect IPCC AR4 values, and amends 27 subparts to improve and clarify reporting requirements. Establishes confidentiality determinations for new and revised data elements.
Final Preamble and Rule (11/2013) (pdf) (79 pp, 935K)
Correction Notice (11/2013) (pdf) (2 pp, 248K)
Response to Comments (11/2013)
Fact Sheet (11/2013) (pdf) (37.6 KB)
Memo: Table of Final 2013 Revisions to the Greenhouse Gas Reporting Rule (pdf) (1 MB)
Proposed Preamble and Rule (4/2/2013) (pdf) (77 pp, 909K)
2014
08/13/2012 77 FR 48072 Final Rule Establishes confidentiality determinations for most data elements to be reported under subparts I, W, DD, FF, II, QQ, RR, SS, TT, and UU; defers the deadline for reporting certain recently added data elements that are inputs to emission equations in subparts W, FF, and TT; finalizes amendments to subpart I to remove the requirement for a facility using Best Available Monitoring Methods (BAMM) to recalculate the previous reporting years’ emissions and resubmit to EPA.
Final Preamble and Rule (8/2012) (pdf) (88 pp, 287K)
Response to Comments (8/2012)
Fact Sheet (8/2012) (pdf) (44 KB)
Proposed Preamble and Rule (1/10/2012) (pdf) (19 pp, 230K)
Proposed Preamble and Rule (2/22/2012) (pdf) (17 pp, 212K)
Proposed Preamble and Rule (2/24/2012) (pdf) (23 pp, 261K)
More Information on 8/2012 Final Rule
2011
11/29/2011 76 FR 73866 Final Rule Amends subparts A, W, FF, II, OO, RR, and TT to clarify reporting requirements and correct technical and editorial errors.
Final Preamble and Rule (11/2011) (pdf) (25 pp, 341K)
Response to Comments (11/2011)
Fact Sheet (11/2011) (pdf) (48 KB)
Proposed Preamble and Rule (8/4/2011) (pdf) (30 pp, 427K)
More Information on Technical Corrections
2011
12/01/2010 75 FR 74774 Final Rule Adds subparts I, L, DD, QQ, and SS, which are sources of fluorinated GHGs, to 40 CFR Part 98.
Response to Comments (12/2010)
Proposed Preamble and Rule (4/12/2010) (pdf) (72 pp, 546K)
Proposed Rule (4/10/2009) (pdf) (3.0 MB)
Proposed Preamble (4/10/2009) (pdf) (3.7 MB)
Subpart SS Fact Sheet (pdf) (41 KB)
Subpart SS Technical Support Document: Electric Equipment Manufacture or Refurbishment and Manufacturing of Electrical Components (pdf) (146 KB)
Subpart SS Economic Impact Assessment (pdf) (477 KB)
More Information on Subparts I, L, DD, QQ
2011

Greenhouse Gas Reporting Program (GHGRP)

  • Find and Use GHGRP Data
  • National Data Highlights
    • Emissions Trends
    • Emissions by GHG
    • Emissions by Location
    • Emissions Ranges
  • Sector Data Highlights
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    • Underground Coal Mines
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    • Suppliers Highlights
      • Natural Gas & Natural Gas Liquids
      • Petroleum Products
      • Industrial GHGs and Products Containing GHGs
    • Supply, Underground Injection, and Geologic Sequestration of CO2
    • Fluorinated Greenhouse Gases
  • Data Sets
  • For GHG Reporters
    • Rulemaking Notices
      • Subpart W
      • Historical Rulemakings
    • Resources by Subpart
    • Confidential Business Information
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    • Applicability Tool
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  • Learn About GHGRP
    • What is the GHGRP?
    • Newsletters
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    • GHGRP and the Oil & Gas Industry
    • GHGRP and the Waste Industry
      • Landfills and GHGRP
    • GHGRP and the U.S. Inventory of GHG Emissions
    • Importers and Exporters
  • Data Citation
Contact Us About GHG Reporting
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 31, 2025
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